Thirds to reuben knerr and otto gessner



No. s|2,5s|. Patented Oct. I8, I898. P. BONUS.

SAFETY GATE FOR DRAWBRIDGES.

(Application filed Oct. 6, 1897.) I {No Model.) 2 Sheets-Sheet I.

No. 6|2,58|. V Patented-Oct; 18, I898.

, P. BONUS;

SAFETY GATE FOR DRAWBRIDGES.

(Applicflion filed Oct. 6, 1897.) (No Model.) 2 Shee tsShaa t 2.

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llnrrnn STATES ArnNr Orricn.

PETER BONUS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OETWO- TI'I'IRDS TOREUBEN KNERR AND OTTO GESSNER, OF SAME PLACE.

SAFETY-GATE FOR DRAWBFHDG ES.

SPECIFICATION forming part of Letters Patent No. 612,581, dated October18, 1898.

Application filed October 6, 1897- To all whom it may concern..-

Be it known that I, PETER BONUS, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new an d useful Improvements inSafety- Gates for Drawbridges, of which the following is aspecification, reference being had therein to the accompanying drawings.

My invention relates to certain improvements in safety-gates fordrawbridges and like structures, and has for its object to provide animproved form of gate which may be operated automatically by the tnrning of the draw-section or by suitable devices operating independently ofthe movement of the drawsection.

In the accompanying drawings, Figure 1 is a sectional elevation on theline 1 1, Fig. 2, of a safety-gate constructed in accordance with myinvention. Fig. 2 is a transverse sectional elevation of the same on theline 2 2, Fig. 1. Fig. 3 is a view similar to Fig. 2, illustrating amodification of the invention, and Figs. 4 and 5 are perspective detailsmore specifically referred to hereinafter.

Referring to the drawings, A is the turn or draw section of the bridge,mounted on rollers a, which are adapted to travel on an annular track ain the usual manner. At the extreme end of the section'A is secured arackbar I), which intermeshes with the teeth of a gear-wheel 13, mountedon a shaft 1), arranged in suitable bearingson the shore-piers. Theturn-section A is guided and partly supported at its opposite ends by arail 0, adapted to grooved wheels O, mounted in a frame 0.

The shaft b is arranged at about the longitudinal center of theroadway,and on either side are short shafts D D, on which are se curedsprocket-wheelscl d, respectively, the two sprocket-wheels beingconnected to each other by a link belt 6. On the shaft D is alsosituated a sprocket-wheel f, connected by a link belt g to asprocket-wheel G on the cen tral shaft 1), the arrangement of thevarious sprocket-wheels and link belts being such that on the movementof the turn-section A the shafts D D will be revolved in oppositedirections.

Each shaft D I) is made in two or more see- Serial No. 654,208. (Nomodel.)

On the roadway at each end of the turn- .section are two safety-gates II, the gate I being located at a point very close to the edge of theturn-section and the gate I being located at some considerable distancetherefrom-say forty or fifty feet--in order to arrest traffic before atoo-close approach to the edge of the turn-seotion.

i The roadway-gates 2' are pivoted at Ya to vertical posts K and are soarranged that they may assume either a vertical or horizontal po sitionto close or to open the roadway. Each of the sprocket-wheels d d isprovided with a crank-pin Z, connected by a link L to the gate-sections1', and in a similar manner the outer end portions of theshafts D D arepro vided with disks M, having crankpins on, connected by links m to thegate-sections of the gate 1', so that on the turning of theoperating-shaft both gates will be opened or closed at the same time.

To the side rails or to suitable posts on the sides of the roadway arepivoted secondary gates N, which may be moved across the footpaths oneither side of the roadway by links 41, which connect them to thegate-sections i. The lower ends of the gatesN are weighted, as at n, inorder that they may normally tend to assume a vertical position.

In operation the turning of the section A causes a rotative movement ofthe shaft 1), which movement is transmitted by the connecting link beltsto the shafts D D and so effects, through the crank-pins Zm, the turning of the gate-sections to either the open or the closed position.

I11 some cases, where it is not desirable to effect the opening orclosing of the gates by the movement of the turn-section, I may employ asuit-able electric motor I, connected by gearing p to one or other ofthe gate-operating shafts D I), the shafts being coupled together by thelink belts e and sprocketwheels d d, so that they will be operatedsiinultaneousl y.

Having thus described my invention, what I claim, and desire to secureby Letters Patout, is-

1. In combination, the turn or draw section of a bridge, safety-gatesarranged in pairs at each end of the turn-section, each pair of gatesbeing separated and placed at different intervals in the length of theroadway, with mechanism connecting the pairs of gates and adapted tosimultaneously effect the opening and closing of the same, substantiallyas specified.

2. The combination, with the turn-section of a bridge of safety-gatesarranged in pairs at each end of the turn-section, each pair of gatesbeing separated and placed at dilterent intervals in the length of theroadway, operating-shafts extending between the pairs of gates andadapted to effect the opening and closing of the same, and couplingsarranged in the length of the shafts to permit expansion or contraction.of the sections thereof, substantially as specified.

3. In combination, a rack-bar carried by the turn-section of the bridge,a gear-Wheel mounted .upon the stationary section of the bridge and withwhich said rack-bar is adapted to mesh, a sprocket-wheel carried uponthe same shaft with the gear-wheel, sprocketwheels G and d, a chain forconnecting the first-named sprocket-wheel with the Wheel f, a wheelcarried upon the same shaft with the wheel f, a crosschain forconnecting the wheels (Z d,crank-pi11s carried by the sprocketwheel,links attached to said cranks, gates supporting posts, gate-sectionspivoted there to and with which said links connect, secondary gates N,and links a connecting said secondal" gatesto the main-gate sections,substantially as specified.

In testimony whereof I affix my signature in thepresence of twowitnesses.

PETER BONUS.

Witnesses:

DAVID GOODBREAD, J. .Iosnrri STRATTON.

